... Chon B1, p2, ., pk cho -L I.i \t \2 =I(v, -B, -p,X,,, -6 ,x,., - -Bnxu,,) i=l i=l dat cuc ti6u (+.s) Didu ki6n cuc tri cria (4.5) L a)"1 fi = -' 21"' -0 , - 8,x,., - 0,X,, " Pk - -0 *x*., )= ji' i=l ... Nilu ) Ni5u April 2011 $ {. ,-, ,. ,-, ,,,, t oa { !," ,-, ,, ,-, *,, s q $ > r,, -, ,",-r,r-,14 thi ta b6c b6 Ho -, ,,,-r,r-"rzy thi ki6ng b6c b6 Ho 26...
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24/05/2014, 19:28